Question

use suitable identity and find the product
i) (8y + 4) (8y + 3)
ii) ( 6a +2b) ( 6a + 2b)

Answer 1

Answer:

i) (x+a) (x+b) =x²+(a+b)x+ab

=(8y)²+(4+3)8y+4×3

64y²+12(8y)+12

64y²+96y+12

ii) (a+b)²= a²+b²+2ab

=(6a)²+(2b)²+2(6a)(2b)

=36a²+4b²+24ab

Answer 2

i) Using distributive property
8y(3+4)
8y(7)
56y

i) Using distributive property
6a(2b+2b)
6a(4b)
24ab